フローインジェクション分析法を応用した冷却水水質管理システム An Application of Flow Injection Analysis to Water Quality Monitoring System

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Author(s)

Abstract

For an open cooling water system with a zinc-polyphosphate inhibitor, a water quality monitoring system adopted Flow Injection Analysis was introduced. Concentrations of phosphate (inhibitor) and Fe(II) ions were measured automatically by the analytical flow system. Analytical curves for phosphat and Fe(II) ions have good linearity, and their correlation coefficients were 0.9995 and 0.9999, respectively.<br>Reproducibility of measured value for Fe(II) ions was very good and that for phosphate ions was not so good. But these results were satisfactory for practical purposes. When the analytical flow system was applied to on-line monitoring, measured value for phosphate ions have a little amount of scatter. The reason may be explained as follows: 1) the conversion rate of phosphorus forms, during water sample is running through the heated zone, has slightly different at each measurment, and 2) the capability of ascorbic acid as a reducing agent for antimony-phospho-molybdate complex becomes weak with lapse of time. However, this water quality monitoring system has been developed to the point of being usable in practical applications.

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 36(4), 234-238, 1987

    Japan Society of Corrosion Engineering

Codes

  • NII Article ID (NAID)
    130004731935
  • NII NACSIS-CAT ID (NCID)
    AN00225595
  • Text Lang
    UNK
  • ISSN
    0010-9355
  • NDL Article ID
    3126568
  • NDL Source Classification
    M092(用水・廃水--水質試験)
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-266
  • Data Source
    NDL  J-STAGE 
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